[whpalmer4]

That's correct, the find operation only searches the items in the current view. Use the built-in All Items perspective and repeat your search.

f you remember approximately when you entered a new item but are not sure about what you called it, doing a context mode search grouped or sorted by Date Added can be an effective way to track something down. You can do this using due or start dates if you recall them, but the date added has the advantage that the program sets that value and there's no possibility of it accidentally being changed by user error.